Naps aren't just for children. For many people, naps are part of their daily routine. 

They can be a quick remedy for that afternoon drowsiness and some people suggest that strategic napping can enhance productivity and overall well-being. 

But how long should we nap? 

According to the University of Rochester Medicine Comprehensive Sleep Center, about 70 million people in the U.S. have a sleep disorder. Around 13% of Americans have frequent insomnia, and women are more likely to experience it than men. 

Stressful life events, such as job loss, divorce or the death of a loved one, can lead to insomnia. And when we feel that we did not get a good night's rest, we take naps to make up for it. 

"When we sleep longer than an hour, we start getting into the deeper stages of sleep, like slow wave sleep and REM sleep, and those stages, if you get them during the day, you don't get them during the night," said Leisha Cuddihy, assistant professor of psychiatry at the University of Rochester Medical Center. "If you're dozing off for five or 10 minutes, that's probably not great. But if we're talking about intentional napping, I would say there is no 'too short.'"

Dr. Cuddihy says if you have existing mental health conditions like anxiety or depression, a bad night of sleep can make symptoms worse for that day. She also says taking a 20 or 30-minute nap will not affect most individuals — just don't sleep past an hour and listen to your own body.